Welcome to Commas: Fill in the Blanks!
Instructions: in each blank space in the paragraphs below, provide a comma where it is appropriate or write a small-case "x" (without the quotation marks) where a comma is not necessary. (Make sure your "caps lock" key is not engaged.) There are seventy "opportunities for error" within these paragraphs. The tab key will take you from one space to the next.

At any time, you can click on Check Answers to see which of your answers are correct. Incorrect answers will be blanked out.You can also click on Hint to check your answers and then provide the comma or "x."

Some differences of opinion about punctuation might be expected, especially when it comes to commas after introductory phrases and the commas that go between two independent clauses. We should agree on most points, however. If there are substantial differences between how you would punctuate this text and how Grammar English would do it, you can send her e-mail to express your opinion.